Solved issue Menu UI blocks when starting not possible

Author: sweiland-openrails

Source/Menu/DownloadContentForm.cs

@@ -791,6 +791,9 @@ void StartButton_Click(object sender, EventArgs e)
                 // close this dialog
                 DialogResult = DialogResult.OK;
 
+                setCursorToDefaultCursor();
+                ClosingBlocked = false;
+
                 return;
             }